Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Domain] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Legal Entity [Axis] Document Type Counterparty Summary of Significant Accounting Policies [Abstract] Accounts receivable trade Accounts Receivable, Net, Current Accounts payable Accounts Payable, Current Less accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Other comprehensive loss Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Property purchase Acquisition Costs, Period Cost Additional paid-in capital Additional Paid-In Capital [Member] Expense of employee options vesting Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition Adjustments to reconcile net loss to net cash provided by operations Share-based compensation expense Antidilutive Securities [Axis] Antidilutive securities excluded from computation of earnings per share [Line Items] Antidilutive Securities, Name [Domain] Weighted-average anti-dilutive stock options (in shares) Asset Retirement Obligations Asset Retirement Obligation Disclosure [Text Block] Accretion of discount Asset Retirement Obligation, Accretion Expense Asset retirement obligations Asset Retirement Obligations [Abstract] Ending asset retirement obligation Asset Retirement Obligation Reconciliation of the total liability for asset retirement obligations [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Liabilities settled Asset Retirement Obligation, Liabilities Settled Beginning asset retirement obligation Asset Retirement Obligation, Current Liabilities incurred Total assets Total Assets Total assets Assets, Fair Value Disclosure Current assets: ASSETS Assets [Abstract] Total current assets Assets, Current Available for sale securities Available-for-sale Securities Available for sale securities Oil and Gas Production Type [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Cost of acquisition Business Combination, Consideration Transferred Call Option [Member] Capitalized costs excluded from amortized cost pool Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative Unproved Proved Carry Amount [Member] Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Net cash provided by operating activities of discontinued operations Commitments and contingencies Common stock, par value (in dollars per share) Common Stock [Member] Common stock, $.01 par value; unlimited shares authorized; 27,896,697 and 27,735,878shares issued, respectively Common stock, shares issued (in shares) Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Consolidation Items [Domain] Consolidation Items [Axis] Corporate [Member] Oil and gas Operating expenses: Total operating expenses Costs and Expenses Current (provision for) Current Income Tax Expense (Benefit) Executive retirement program liability Customer Loyalty Program Liability, Noncurrent Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Debt [Abstract] Debt Instrument [Axis] Debt Instrument, Name [Domain] Interest rate (in hundredths) Debt Instrument, Interest Rate, Stated Percentage Fair value and carrying value of debt Debt [Abstract] Debt Instruments [Abstract] Deferred benefit from Deferred Income Tax Expense (Benefit) Oil and gas depreciation, depletion and amortization Depletion of Oil and Gas Properties Depreciation, depletion & amortization Depreciation depletion and amortization expense [Abstract] Total depreciation expense Depreciation Derivative Asset, Gross amount offset in Derivative Asset, Fair Value, Gross Liability Derivative [Line Items] Derivative Asset, Fair Value, Net [Abstract] Derivative Liability, Gross Derivative Liability, Fair Value, Gross Asset Derivative Liability, Fair Value, Net [Abstract] Derivative [Table] Commodity Price Risk Management [Abstract] Commodity Price Risk Management Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Asset, Net amount of assets Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Liabilities, Gross amount offset in Derivative Liability, Fair Value, Gross Liability Total realized and unrealized derivative (loss) gain Derivative, Gain (Loss) on Derivative, Net Derivative Assets, Gross Derivative Liability, Net amount of assets Derivative Liability, Fair Value, Amount Not Offset Against Collateral Basis Strike Price (in dollars per barrel) Derivative Instruments Derivatives, Fair Value [Line Items] Net income (loss) per share basic Net income (loss) per share diluted Earnings Per Share, Diluted [Abstract] Earnings Per Share Net income (loss) per share (in dollars per share) Earnings Per Share, Basic Net income (loss) per share (in dollars per share) Earnings Per Share, Diluted Earnings Per Share [Abstract] Accrued compensation Employee Stock Options [Member] Total unrecognized expense for the option plan Shareholders' Equity [Abstract] Impairment of equity investment Equity Method Investment, Other than Temporary Impairment Equity Component [Domain] Equity Income in Unconsolidated Investment [Abstract] Equity Income in Unconsolidated Investment Equity Method Investments and Joint Ventures Disclosure [Text Block] Fair Value [Member] Fair value measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Carrying amount of investment Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unobservable Input, Unrealized Loss, Included in Earnings Fair Value, Hierarchy [Axis] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Measurements [Abstract] Fair Value, Measurements, Fair Value Hierarchy [Domain] Measurement Basis [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurement [Domain] Significant Other Observable Inputs (Level 2) [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] Significant Unobservable Inputs (Level 3) [Member] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Realized derivative (loss) gain Realized (loss) gain on risk management activities (Gain) on sale of assets Gain on the sale of assets Acres acquired, gross Gross acres acquired in acquisition (in acres) Net acres acquired in acquisition (in acres) Commodity risk management liability Commodity risk management asset Impairment of oil and gas properties Proved property impairments Income (loss) from continuing operations (in dollars per share) Equity gain (loss) from Standard Steam Equity loss from Standard Steam Equity loss in unconsolidated investment Income (loss) from continuing operations Income (Loss) from Continuing Operations Attributable to Parent Income from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) [Abstract] Income (loss) before income taxes and discontinued operations Income (loss) before income taxes and discontinued operation Income Taxes [Abstract] Income (loss) from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Total discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income from discontinued operations (in dollars per share) Income taxes: Total income taxes Income Tax Expense (Benefit) Income Taxes Income Tax Disclosure [Text Block] (Gain) from discontinued operations Discontinued operations: Accounts payable Net changes in assets and liabilities Increase (Decrease) in Operating Capital Net change in restricted investments Increase (Decrease) of Restricted Investments Changes in common stock [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Add: dilutive effect of stock options (in shares) Interest expense Interest Expense Add back Interest expenses Total interest expense Interest paid Interest Paid Interest income Investment Income, Interest Total current liabilities Liabilities, Current Total liabilities and shareholders' equity Liabilities and Equity Total Financial and Nonfinancial Liabilities, Fair Value Disclosure Current liabilities: LIABILITIES AND SHAREHOLDERS' EQUITY Amount Outstanding Long-term Line of Credit Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Senior credit facility [Member] Line of Credit [Member] Debt Long-term Debt [Text Block] Long-term debt, net of current portion Unrealized change from available for sale securities Marketable Securities, Unrealized Gain (Loss) Maximum [Member] Mineral Properties [Abstract] Undeveloped mining claims Costs at the end of the period Mineral properties Costs associated with Mount Emmons beginning of year Mineral holding costs Minimum [Member] Mineral properties [Member] Mining Properties and Mineral Rights [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Table] Ownership percentage (in hundredths) Net income (loss) Net income (loss) Net Income (Loss) Attributable to Parent Cash flows from financing activities: Cash flows from investing activities: Net cash (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from operating activities: Net cash (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Recent Accounting Pronouncements Non-cash investing and financing activities: Other revenues and expenses Total other income and (expenses) Nonoperating Income (Expense) Other income and expenses: Number of reportable segments Number of Reportable Segments Oil & gas properties under full cost method, accumulated depletion, depreciation and amortization Less accumulated depreciation depletion and amortization Oil and Gas wells [Member] Oil and Gas Properties [Member] Oil, gas, and NGL production revenues: Oil and Gas Revenue Oil & Gas properties [Abstract] Oil and gas properties under full cost method, net of $63,954 and $57,077 accumulated depletion, depreciation and amortization Net book value Oil and Gas Property, Full Cost Method, Net Oil and Gas Properties [Abstract] Oil and Gas Property [Abstract] Oil & Gas properties Oil and Gas Property, Full Cost Method, Gross Oil and Gas Properties Operating income (loss) from identified segments Income (loss) from operations Operating Income (Loss) Total operating expenses Reportable Segment [Member] Option Indexed to Issuer's Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Domain] Basis of Presentation [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Marketable securities, net of tax Other assets Other accrued liabilities Other current assets Other comprehensive (loss): Noncash services Other Noncash Expense Miscellaneous income Other Nonoperating Income (Expense) Other current liabilities General and administrative Acquisition and development of oil and gas properties Payments to Acquire Oil and Gas Property Acquisition of property Payments to Acquire Machinery and Equipment Plan Name [Domain] Plan Name [Axis] Commodity risk management liability Price Risk Derivative Liabilities, at Fair Value Commodity risk management assets Repayments of debt Proceeds from new debt Issuance of common stock Proceeds from sale of property and equipment Proceeds from sale of assets held for sale Proceeds from sale of oil and gas properties Production Type [Domain] Number of developed wells in which our original working interest is retained Building, land and equipment Properties and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Estimated useful lives Properties and equipment Net properties and equipment Property, Plant and Equipment, Net Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Axis] Property, plant and equipment, net Net book value Property, Plant and Equipment, Other, Net Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Properties and Equipment [Abstract] Public Utilities, Property, Plant and Equipment [Abstract] Put Option [Member] Range [Axis] Range [Domain] Acquisitions and Divestitures [Line Items] Accumulated deficit Revenue Recognition Total revenues Weighted Average Remaining Contractual Life - Years Weighted average remaining vesting period Changes in common stock Fair value of derivatives recorded in applicable consolidated balance sheet, by category Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Computation of diluted net income per share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Activity in employee stock options and non-employee director stock options Reconciliation of the total liability for asset retirement obligations Summary of basic and diluted earnings per share Commodity derivative contracts Schedule of Derivative Instruments [Table Text Block] Summary of result of operations and total assets by segment Schedule of Restructuring and Related Costs [Table] Property, Plant and Equipment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Segment Information [Abstract] Segment Reporting Information, Results of operations [Abstract] Segment Reporting Information [Line Items] Segments [Domain] Segment Information Segment Reporting Disclosure [Text Block] Segment, Geographical [Domain] Weighted Average Exercise Price [Roll Forward] Granted (in dollars per share) Forfeited (in dollars per share) Noncash compensation Share-based Compensation Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Expired (in dollars per share) Exercised (in dollars per share) Exercisable (in dollars per share) Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Exercisable (in shares) Intrinsic value of option exercised Beginning Balance (in dollars per share) Ending Balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding ending balance (in shares) Outstanding beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Aggregate intrinsic value of options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options [Roll Forward] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) [Abstract] Geographical [Axis] CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) [Abstract] Statement, Equity Components [Axis] CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) [Abstract] Segments [Axis] Exercise of employee stock options (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares issued of common stock (in shares) Stock Option [Member] Equity Option [Member] Exercise of employee stock options Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Shareholders' equity Total shareholders' equity Balance Balance Stockholders' Equity Attributable to Parent Shareholders' Equity Stockholders' Equity Note Disclosure [Text Block] Subsequent Event [Member] Subsequent Event Type [Domain] Subsequent Event Type [Axis] Supplemental disclosures: Trading Activity [Axis] Trading Activity, by Type [Domain] Unrealized derivative (loss) gain Change in fair value of commodity price risk management activities, net Unrealized (loss) on risk management activities Unrealized Gain (Loss) on Derivatives Use of Estimates Water treatment plant Weighted average shares outstanding Basic (in shares) Basic weighted-average common shares outstanding (in shares) Diluted (in shares) Diluted weighted-average common shares outstanding (in shares) Area spaced or assigned to productive wells in which a working interest is owned. Net sales of acres Net sales of acres (in acres) The cash inflow adjustment related to revenue. Adjustment related to revenue Proceeds from the transaction after deduction of payment of the note, commission and other closing costs. Net proceeds on transaction Net proceeds on transaction Represents the expected net revenue interests in new wells after sale. Expected net revenue interests in new wells after sale Represent percentage of working interest retained. Percentage of working interest retained Percentage of working interest retained (in hundredths) Represent percentage payout of all costs. Percentage payout of all costs Percentage payout of all costs (in hundredths) Represent the minimum percentage of net revenue interest in lease owned as per the agreement. Minimum Percentage Of Net Revenue Interest In Leases Owned Minimum percentage of net revenue interest in lease owned (in hundredths) Represents the entity in which we have a working interest in the lease. Williams and McKenzie Counties [Member] Represents the entity in which we have a working interest in the lease. Dimmit Wood Properties Ltd [Member] Dimmit County [Member] The acreage that is primarily used for farm-in purposes. Farm in Acreage [Member] The acreage that is primarily used for leasehold purposes. Primary Leasehold Acreage [Member] The initial well commitment under the terms of the agreement. Initial well commitment Represents the entity in which we have a working interest in the lease. Farmor [Member] Information relating to the acquisition of a South Texas based Oil and Gas Company. South Texas Based Oil and Gas Company [Member] South Texas Based Oil and Gas Company [Member] The entire disclosure for acquisitions and divestitures and the associated long-lived asset. Acquisitions and Divestitures [Text Block] Acquisitions and Divestitures Acquisitions and Divestitures [Abstract] Document and Entity Information [Abstract] Represents the price per barrel of natural gas at ceiling test. Price per barrel for natural gas at ceiling test Price for natural gas at ceiling test (dollars per MMbtu) Capitalized costs of unevaluated property included in amortization base. Capitalized costs of unevaluated property included in amortization base Capitalized costs related to unevaluated properties included in the amortization base Represents the percentage of discount used for future net revenue. Percentage of discount used for future net revenue Percentage of discount used for future net revenue (in hundredths) Represents the number of cost centers for quarterly ceiling test for oil and gas. Number of cost centers for quarterly ceiling test for oil and gas Represents the price per barrel for oil at ceiling test. Price per barrel for oil at ceiling test Price per barrel for oil at ceiling test (in dollars per barrel) Represents the period prior to the end of reporting period during which unescalated average prices per barrel of oil and per MMbtu of natural gas are calculated. Period for calculating unescalated average prices prior to the end of reporting period Amount of wells in progress. Wells in progress Exploratory wells in progress A percentage of ownership in an oil and gas lease granting its owner the right to explore, drill and produce oil and gas from a tract of property. Working interest owners are obligated to pay a corresponding percentage of the cost of leasing, drilling, producing and operating a well or unit. After royalties are paid, the working interest also entitles its owner to share in production revenues with other working interest owners, based on the percentage of working interest owned. Working interest Percentage interest acquired (in hundredths) Tabular disclosure of unrealized and realized derivative gain loss on risk management activities during the period. Schedule of Unrealized and realized derivative gain loss [Table Text Block] Schedule of unrealized and realized derivative gain loss Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date Six [Member] Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date seven [Member] Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date Five [Member] Crude Oil Costless Collar 07/01/13 - 09/30/13 [Member] Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date three [Member] Crude Oil Costless Collar 10/01/12 - 09/30/13 [Member] Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date One [Member] Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] Financial information regarding the crude oil costless collar derivatives. Crude Oil Costless Collars [Member] Line item in the statement of financial position in which the fair value amounts of the derivative instruments are included. Current Asset [Member] Line item in the statement of financial position in which the fair value amounts of the derivative instruments are included. Current Liability [Member] The quantity per day of future oil and gas production being hedged. Portion of Future Oil and Gas Production Being Hedged, Per Day Quantity (barrels per day) Represents the settlement period of commodity derivative contracts. Crude Oil Costless Collar Settlement Date Eight [Member] Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] The aggregate of income (loss) from discontinued operations, net of tax attributable to the reporting entity. Total Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity Discontinued operations, net of taxes Tabular disclosure of the long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Components of Property, Plant and Equipment [Table Text Block] Components of property and equipment Tabular disclosure of aggregate capitalized costs relating to mineral properties. Mineral Properties [Table Text Block] Mineral properties Other generally recurring costs associated with normal operations excluding those directly related to the marketing or selling of products and services, and the impairment of aircraft. Other Selling, General and Administrative Expense with Aircraft Impairment General and administrative expenses Segment reporting information, Assets [Abstract] Assets by segment [Abstract] Refers to a operating segment of an enterprise that engages in business activities with oil and gas. Oil and Gas [Member] Equity Plan 2001 [Member] 2001 Stock Compensation Plan [Member] Value of shares issued during the period to outside directors. Stock Issued During Period, Value, Outside Director Exercise of outside director options Number of shares issued during the period to an outside directors. Stock Issued During Period, Shares, Outside Director Exercise of outside director options (in shares) This element represents the amount of recognized equity-based compensation related to stock options to outside directors vested during the period. that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Expense of outside director options vesting An arrangement whereby an directors is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Director Stock Option [Member] Director Stock Options [Member] Value of acquisition and development of oil and gas through accounts payable. Acquisition and development of oil and gas properties through accounts payable Acquisition and development of oil and gas properties through accounts payable Value of acquisition and development of oil and gas through asset retirement obligations. Acquisition and development of oil and gas through asset retirement obligations Acquisition and development of oil and gas properties through asset retirement obligations The name of the equity method investee. Standard Steam Trust LLC [Member] Standard Steam Trust LLC [Member] The entire disclosure for mineral properties. Mineral Properties [Policy Text Block] Mineral Properties Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Asset retirement obligations [Line Items] Tabular disclosure of assets retirement obligations. Schedule of asset retirement obligations [Table] Value assigned to a collection of a borrower's assets, used by lenders to determine the initial and/or ongoing loan amount. Borrowing Base Borrowing base Maturity term of senior credit facility. Maturity term of senior credit facility A loan to purchase or develop land. Land Debt [Member] Land Debt [Member] Other liabilities and debt: [Abstract] Other liabilities and debt [Abstract] Fair Value Measurements of Assets and Liabilities [Abstract] Fair Value Measurements [Abstract] Represents the minimum percentage of ownership in entities for accounting under equity method. Minimum percentage of ownership in entities for accounting under equity method Percentage of ownership in entities for accounting under equity method, minimum (in hundredths)